JPH1163484A - Combustion control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe combustion control device having a high reliability in operation in an oil burning warm air heater by a method wherein a combination of a control circuit board, a micro-computer and a nonvolatile memory means is performed positively with a simple configuration. SOLUTION: A plurality of machine type discriminating codes stored or set in a micro-computer 10, a circuit constant setting section 13 and a non- volatile memory means 11 are compared with and judged by a first comparing and discriminating section 15 and a second comparing and discriminating section 16 to discriminate the type of machine and then a wrong combination of the microcomputer 10, the circuit constant setting section 13 and the non-volatile memory means 11 is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control device used for a hot oil heater or the like.

[0002]

2. Description of the Related Art Conventionally, a combustion control device of this type of oil hot air heater has different control methods and data on combustion for each model due to differences in burner configuration, heating capacity and various additional functions. In order to provide a combustion control device corresponding to a different specification for each model, it was necessary to prepare various types of combustion control devices. For this reason, conventionally, non-volatile storage means for storing data relating to combustion and other control elements and electrically storing the former in an electrically rewritable manner, and the latter using a microcomputer to collect data groups corresponding to a plurality of models. And a method of providing a combustion control device corresponding to the model by a combination thereof has been used.

[0003] The specific configuration is as shown in FIG. That is, in FIG. 6, reference numeral 1 denotes a combustion unit including a burner, an electromagnetic pump for supplying fuel, a blower fan, and the like. Reference numeral 2 denotes a microcomputer having a built-in control element for controlling the operation of the device, which can correspond to a plurality of models. Built-in control elements. Reference numeral 3 denotes a non-volatile storage unit that stores data relating to combustion in an electrically rewritable manner, and is constituted by a data group relating to a plurality of types. Reference numeral 4 denotes a data communication unit for transmitting and receiving data to and from the microcomputer 2 to and from the nonvolatile storage unit 3. Reference numeral 5 denotes a data communication unit built in the microcomputer 2 and
And a combustion control processing means for outputting a combustion control processing signal based on a data group relating to the combustion control obtained from the nonvolatile storage means 3 via the combustion control section.
The combustion control of the controlled part including is performed. Reference numeral 6 denotes first model selection means for selecting a model of the microcomputer,
Reference numeral 7 denotes second model selection means for selecting a model of the nonvolatile storage means.

The operation of the above configuration will be described. First, the first model selection means 6 and the second model selection means 7
Then, the specifications of the microcomputer 2 and the nonvolatile storage means 3 corresponding to the model to be used are selected. When this specification is selected, the microcomputer 2 sets the data communication means 4
The data group relating to the combustion in the non-volatile storage means 3 is taken into the combustion control processing means 5 via. Then, the combustion control processing means 5 sends a combustion control processing signal to the combustion control unit based on the fetched data group, and controls the combustion of the controlled part including the combustion unit 1.

[0005]

However, in the above-described conventional configuration, a model is selected by a model selection means provided with a plurality of control elements and data groups stored in the microcomputer and the nonvolatile storage means. Due to the configuration of combining, there is a problem that if one of the models is incorrectly selected and a combination of different models is used, the combustion is performed using data related to the irregular combustion control.

Further, in a method in which a microcomputer and a non-volatile storage means are prepared for each model, it is necessary to design and develop the microcomputer for each model. There has been a problem that the cost is increased, and the number of microcomputers and non-volatile storage means that need to be managed increases, and the management burden increases.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a combustion control unit for controlling a combustion unit, a microcomputer, and an electrically rewritable storage of combustion-related data and a model identification code. A nonvolatile storage unit; and a circuit constant setting unit configured to set a model set on a control circuit, wherein the microcomputer transmits and receives data to and from the nonvolatile storage unit and the circuit constant setting unit. A circuit constant determining means for determining the model identification code set in the step (a), a ROM storing a plurality of model identification codes, and a comparison determining section A for comparing the model identification code with the ROM
And a built-in operation stop processing means and a combustion control processing means which are operated based on the result of the comparison judgment by the comparison judgment section A or B. The comparison judgment section A has a plurality of model identification codes stored in a ROM. Comparing the model discrimination code determined by the circuit constant determination section, wherein the comparison determination section B compares the model discrimination code stored in the non-volatile storage means with the output of the comparison determination section A; A and the comparison / determination unit B are configured to supply a signal to the next step when the comparison / determination results match, and to supply a signal to the operation stop processing means when the comparison / determination results do not match. Are performed based on the comparison determination result.

According to the above invention, the microcomputer, the circuit constant setting section, and the plurality of model identification codes stored or set in the nonvolatile storage means are compared and determined to determine the model. The non-volatile storage means is not mounted, and the reliability of the data regarding the combustion control is improved, and the reliability and safety of the oil heating / heating fan are improved. In addition, since the control target can be determined based on the model code, one microcomputer can be used for a plurality of models, so that time and cost for design and development can be reduced. In addition, since the model identification code is also stored in the non-volatile storage means, it is possible to determine which type of combustion control device is by reading the model identification code, and the management burden is greatly reduced. Things.

Further, EEP may be used as the nonvolatile storage means.
The circuit constant setting section is configured by input setting means for setting a slave address of the EEPROM using a ROM, and a model identification code is set. The model identification code and the ROM are stored in advance in the ROM of the microcomputer. A plurality of slave address codes (model identification codes) are sequentially switched until the communication protocol is established by the data communication means, and the slave address code when the communication protocol is established is used as an output result of the first comparison / determination section, The output result of the second comparison / determination unit is obtained from the output result and the model identification code stored in the EEPROM.

According to the above invention, since the slave address of the EEPROM is used as the circuit constant setting unit, there is no need to add a new component for the circuit constant setting unit. Thus, reliability and safety of data on combustion control similar to those of the invention of the present invention can be obtained.

[0011]

A combustion control device according to a first aspect of the present invention includes a combustion control unit for controlling a combustion unit, a microcomputer,
An electrically rewritable nonvolatile storage unit storing combustion-related data and a model identification code; and a circuit constant setting unit configured on a control circuit for setting a model, wherein the microcomputer includes the nonvolatile storage unit. Data communication means for transmitting / receiving data to / from, circuit constant judging means for judging a model discriminating code set by the circuit constant setting section, and ROM for storing a plurality of model discriminating codes, and comparison judgment comparing the model discriminating codes. Unit A and comparison determination unit B
And a built-in operation stop processing means and a combustion control processing means which operate in accordance with the result of the comparison judgment by the comparison judgment section A or B. The comparison judgment section A includes a plurality of model identification codes stored in a ROM and the circuit constant judgment section. The comparison / determination unit B compares the model determination code stored in the non-volatile storage means with the output of the comparison / determination unit A. The comparison / determination unit A and the comparison / determination unit B is configured to supply a signal to the next step when the comparison and determination results match, and to supply a signal to the operation stop processing means when they do not match, and to determine the model based on the comparison and determination results of the plurality of model determination codes. I do it.

In order to compare and determine a plurality of model identification codes stored or set in the microcomputer, the circuit constant setting section and the nonvolatile storage means, the microcomputer is operated with the nonvolatile storage means of different models mounted. The reliability and safety of combustion control data can be improved, and the control target can be identified by the model code. Therefore, one microcomputer can be used for multiple models. Shortening and cost reduction can be achieved. Further, since the model discrimination code is also stored in the non-volatile storage means, it is possible to determine which model the combustion control device is by reading the model discrimination code, thereby greatly reducing the management burden. be able to.

Further, the combustion control device of the present invention uses an EEPROM as the nonvolatile storage means.
The above-mentioned circuit constant setting section is constituted by input setting means for setting a slave address of M, and a model identification code is set. This model identification code and a plurality of slave address codes stored in advance in the ROM of the microcomputer are set. The (model identification code) is sequentially switched until the communication protocol is established by the data communication means, and the slave address code at the time when the communication protocol is established is used as the output result of the comparison / determination unit A.
The configuration is such that the output result of the comparison / determination unit B is obtained from the model identification code stored in the EPROM.

EEPRO is used as a circuit constant setting unit.
Since a slave address of M is used, there is no need to add a component for setting a new circuit constant setting unit, so that a combustion control device with improved reliability and safety without increasing costs is provided. Can be.

Further, the combustion control device according to the third aspect is configured so that the type determination operation is repeatedly performed at a preset cycle while the power is on.

Since the comparison of the model discrimination is repeatedly performed at a preset cycle, the model discrimination code stored or set in the microcomputer, the circuit constant setting unit or the non-volatile storage means during operation may cause the model to fail. Even when the determination results do not match, the operation stop processing means can be executed, so that a combustion control device with improved reliability and safety can be provided.

According to a fourth aspect of the present invention, in the combustion control apparatus, the non-volatile storage means has a data group relating to combustion control corresponding to the model code, and stores the data in the model code selected based on the output result of the comparison / determination section B. A corresponding data group is supplied to the combustion control processing means via the data communication means.

Since the data group is divided and stored in the non-volatile storage means according to the model, one microcomputer and one non-volatile storage means can be used for a plurality of models. Since the model discrimination code is stored in the non-volatile storage means, it is possible to determine the type of the combustion control device by reading the model discrimination code, thereby reducing the burden of management. Can be greatly reduced.

According to a fifth aspect of the present invention, in the case where the output of either of the comparison / determination section A or the comparison / determination section B is a non-coincidence output, all the operations are stopped via the operation stop processing means and the abnormality is notified. Is configured to be performed.

If the model identification codes do not match, the operation is stopped and an abnormality is notified, so that safety can be improved and usability can be improved.

Further, in the combustion control device according to the present invention, if the output of either the comparison / determination unit A or the comparison / determination unit B is a non-coincidence output, the data of the combustion control stored in advance in the ROM of the microcomputer is stored. All the operations are stopped at the standard value via the operation stop processing means.

If the model identification codes do not match,
Since the specific operation stop processing is performed without being affected by the reliability of the data stored in the nonvolatile storage means, safety can be improved.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings, in which the same parts as those of the prior art are denoted by the same reference numerals, description thereof will be omitted, and different parts will be described.

(Embodiment 1) FIG. 1 is a block diagram of a combustion control apparatus according to Embodiment 1 of the present invention.

Reference numeral 10 denotes a microcomputer;
Numeral denotes nonvolatile storage means for electrically rewritably storing data, 12 denotes data communication means, 13 denotes a circuit constant setting unit for determining a model set on a control circuit, and 14 denotes a circuit constant setting unit. Circuit constant determining means for determining the constant setting unit by the microcomputer 2;
Is a first comparison / determination section, 16 is a second comparison / determination section, 17 is a ROM storing a model identification code, and
Are built in the microcomputer 2. Further, the microcomputer 10 has a control processing determining function of determining which control processing is to be executed according to the model code.

FIG. 2 is a flowchart showing the operation of the combustion control device according to the first embodiment of the present invention. The operation of the combustion control device having the above configuration will be described with reference to FIG. 1 or FIG.

The microcomputer 10 reads the value of the circuit constant setting unit 13 for determining the model set on the control circuit via the circuit constant determining means 14. This is referred to as a model identification code α. The microcomputer 10
One of a plurality of model identification codes stored in its own ROM 17 is input to the first comparison / determination unit 15 to determine whether or not they match. First comparison determination unit 15
If the result of the determination in step (1) does not match, the microcomputer 10 inputs to the first comparison / determination unit 15 any of the model identification codes stored in the ROM 17 other than the code used for the comparison determination. The above determination is made until the results match. If there is no matching code even after comparison and determination with all of the model identification codes stored in the ROM 17 of the microcomputer 10, if the operation is in progress, the operation stop processing means 7 is executed to stop all operations and stop. If it is in the middle, do not start operation. First comparison / determination unit 1
If the results of the determination in step 5 match, this is used as the model identification code β. Next, the microcomputer 10 reads the model identification code γ stored in the nonvolatile storage unit 11 via the data communication unit 12. The microcomputer 10 inputs the model identification code β and the model identification code γ to the second comparison / determination unit 16 and determines whether or not they match. If the results of the determination by the second comparison / determination section 16 do not match, the operation stop processing means 9 is executed to stop all the operations if the vehicle is in operation, and the operation is not started thereafter if the vehicle is stopped. If the result of the determination by the second comparison / determination unit 16 matches, the microcomputer 10 executes the subsequent combustion control processing means 8 using the result as a model code. For example, whether there is a pulse motor-driven movable louver attached to the hot air outlet, the control method of the electromagnetic pump, the control method of the blower fan, and the control method judgment function from the model code And the operation control processing means performs combustion control processing corresponding to the model. In addition, the above-described series of operations is repeatedly performed at a predetermined cycle while the power is on.

(Embodiment 2) FIG. 3 is a block diagram of a combustion control apparatus according to Embodiment 2 of the present invention.

In the second embodiment, the nonvolatile memory means 11 of the first embodiment is constituted by an EEPROM 11a. The EEPROM 11 has a plurality of slave addresses.
An arbitrary slave address can be set by setting the setting port 13a. The setting port 13a is set in a hardware manner on the control board, and is used as means for selecting the model of the control board. Further, a circuit constant setting unit 13 for determining the model based on the setting port 13a and the slave address of the EEPROM 11 is provided. When there are three ports for setting the slave address as in the present embodiment, the model identification code of the control board is “0”.
Eight models can be set from "00" to "111".
In the present embodiment, a case will be described in which the slave address code is set to “011” as shown in FIG.

First, the microcomputer 10 attempts to communicate with the EEPROM 11a via the data communication means 12 with the slave address code set to "000". However, since the slave address code set in the EEPROM 11a is "011", the communication protocol is not established. Next, the microcomputer 1
In the case of 0, the slave address code is set to "001" and the communication with the EEPROM 11a is attempted to be performed via the data communication means 12. However, the slave address code set in the EEPROM 11a is "011" in the same manner as described above, and thus does not match. , No communication protocol is established. Similarly, the microcomputer 10 sequentially changes the slave address code until the communication protocol is established. In this embodiment, the slave address code is set to “01”.
When "1" is set, the communication protocol is established because it matches the slave address code "011" set in the EEPROM 11a. The slave address code at this time is referred to as a model identification code β which is an output result from the first comparison / determination unit 15. At this time, for example, the microcomputer 1
When the two types of model discrimination codes stored in the ROM 17 incorporated in the “0” are “000” and “001”, the output of the first comparison / determination unit 15 does not match, so the operation stop processing means 7 is executed. You.

Next, the microcomputer 10 sets the slave address code (=
E through the data communication means 12 with the model identification code β)
The model identification code stored in the EPROM 11a is read. The model identification code at this time is γ. The microcomputer 10 inputs the model identification code β and the model identification code γ to the second comparison / determination unit 16 and determines whether or not they match. If the results of the determination by the second comparison determination unit 16 do not match, and the device is in operation, the operation stop processing means 9 is executed to stop all operations, and if it is stopped, the operation is not started thereafter. . Second comparison / determination unit 1
If the result of the determination at step 6 is the same, the microcomputer 10 executes the subsequent combustion control processing means 8 using the result as the model code.

(Embodiment 3) FIG. 4 is a block diagram of a combustion control apparatus according to Embodiment 3 of the present invention.

As shown in FIG. 4, the nonvolatile storage means 11
Is configured to store data related to combustion control in a data group for each model. The configuration for performing the model determination based on the comparison determination result of the plurality of model determination codes is the same as that in the first or second embodiment, and a description thereof will be omitted. When the microcomputer 10 determines the model discrimination code by the model discrimination process, the microcomputer 10 reads only the data group corresponding to the model from the nonvolatile storage unit 11 by the data communication unit 12 and executes the combustion control processing unit 8.

The data stored in the non-volatile storage means 11 may be set so that data common to a plurality of models is read as a common data group for any model identification code.

(Embodiment 4) FIG. 5 is a block diagram of a combustion control apparatus according to Embodiment 4 of the present invention.

Reference numeral 12 denotes a buzzer for generating an alarm sound.
Reference numeral 13 denotes a display unit for displaying an operation state and the like. For example,
In the first embodiment or the second embodiment, when the comparison determination result of the model identification code does not match, a signal is supplied to the operation stop processing means 9. The operation stop processing means 9 stops the operation of the combustion unit 1, emits an alarm sound to the user with a buzzer 12 to notify the user of the abnormality, and notifies the user of the abnormality by a lamp display on the display unit 13. The display method may be lighting or blinking of an LED, or lighting or blinking of a preset number or symbol.

Further, the operation stop processing means 9 can stop the operation by a specific stop processing method stored in advance in the microcomputer 10 when the results of the comparison judgment of the model discrimination codes do not match.

[0038]

As described above, according to the combustion control apparatus of the first aspect, the microcomputer, the circuit constant setting section, and the plurality of model identification codes stored or set in the nonvolatile storage means are compared and determined. The reliability and safety of data related to combustion control are eliminated because there is no need to operate with the non-volatile storage means of different models mounted or to mount the wrong combination of the control board, microcomputer and non-volatile storage means. Can be improved,
In addition, since the control target can be identified by the model code, one microcomputer can be used for multiple models.
Reduces design development time and costs. Further, since the model discrimination code is also stored in the non-volatile storage means, it is possible to determine which model the combustion control device is by reading the model discrimination code, thereby greatly reducing the management burden. be able to.

According to the combustion control device of the second aspect,
Since the configuration uses the EEPROM slave address and port setting as the circuit constant setting unit, there is no need to add a new component for setting the circuit constant setting unit, thereby reducing the number of parts and cost. Reduction,
In addition, a highly reliable and safe combustion control device can be provided.

According to the combustion control device of the third aspect,
Since the model discrimination operation is repeatedly performed at a preset cycle while the power is on, abnormality of the model discrimination code and the like during operation can be detected quickly, so that it is possible to provide a combustion control device with improved safety. it can.

According to the combustion control device of the fourth aspect,
The data group is divided according to the model and stored in the non-volatile storage means, so that one microcomputer and one non-volatile storage means can be used for a plurality of models, thereby reducing the time and cost of designing and developing the microcomputer. Since the model identification code is stored in the non-volatile storage means, the type of combustion control device can be identified by reading the model identification code, greatly reducing the management burden. can do.

According to the combustion control device of the fifth aspect,
If the model identification code does not match, stop the operation,
Since the abnormality is notified, it is possible to improve safety and to improve usability.

According to the combustion control device of the sixth aspect,
When the model discrimination codes do not match, a specific operation stop process is performed without being affected by the reliability of the data stored in the nonvolatile storage means, so that safety can be improved. .

[Brief description of the drawings]

FIG. 1 is a block diagram of a combustion control device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the combustion control device.

FIG. 3 is a block diagram of a combustion control device according to a second embodiment of the present invention.

FIG. 4 is a block diagram of a combustion control device according to a third embodiment of the present invention.

FIG. 5 is a block diagram of a combustion control device according to a fourth embodiment of the present invention.

FIG. 6 is a block diagram showing a conventional control device for an oil hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combustion part 8 Combustion control processing means 9 Operation stop processing means 10 Microcomputer 11 Nonvolatile storage means 11a EEPROM 12 Data communication means 13 Circuit constant setting part 14 Circuit constant judgment means 15 First comparison judgment part 16 Second comparison judgment part 17 ROM

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akiko Asari 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] 1. A combustion control section for controlling a combustion section, a microcomputer, electrically rewritable nonvolatile storage means for storing combustion-related data and a model identification code, and setting of a model set on a control circuit. A microcomputer configured to transmit and receive data to and from the nonvolatile storage unit; a circuit constant determining unit configured to determine a model identification code set by the circuit constant setting unit; A first comparison / determination unit and a second comparison / determination unit for comparing the model identification code with a ROM storing a plurality of model identification codes, and an operation stop process that operates based on the comparison / determination result of the first comparison / determination unit or the second comparison unit Means and a combustion control processing means, wherein the first comparison / determination unit determines the plurality of model identification codes stored in the ROM and the circuit constant determination unit. Compare the model identification code and
The comparison / determination unit compares the model identification code stored in the non-volatile storage means with the output of the first comparison / determination unit, and the first comparison / determination unit and the second comparison / determination unit determine whether the comparison / determination results match. A combustion control device configured to supply a signal to a next step and to supply a signal to operation stop processing means in the case of a mismatch, so as to perform model determination based on a comparison determination result of a plurality of model determination codes. 2. An EEPROM as the nonvolatile storage means.
The circuit constant setting section is configured by input setting means for setting a slave address of the EEPROM using M, and a model identification code is set. The model identification code and the microcomputer are stored in advance in the ROM of the microcomputer. The plurality of slave address codes (model identification codes) are sequentially switched until the communication protocol is established by the data communication means, and the slave address code when the communication protocol is established is used as the output result of the comparison / determination unit A. 2. The combustion control device according to claim 1, wherein the output result of the second comparison / determination unit is obtained based on the output result and the model identification code stored in the EEPROM. 3. The combustion control device according to claim 1, wherein the model discrimination operation according to the above configuration is repeatedly performed at a preset cycle while the power is on. 4. The non-volatile storage means has a data group related to combustion control corresponding to a model code, and stores a data group corresponding to a model code selected based on an output result of the second comparison / determination unit in the data communication. 3. The combustion control device according to claim 1, wherein the combustion control device is supplied to the combustion control processing means via the means. 5. When the output of either the first comparison / judgment unit or the second comparison / judgment unit is a non-coincidence output, all operations are stopped via the operation stop processing means and an abnormality notification is issued. The combustion control device according to claim 1. 6. If the output of either the first comparison / judgment unit or the second comparison / judgment unit is a non-coincidence output, the operation is performed based on a standard value of combustion control data previously stored in a ROM of the microcomputer. The combustion control device according to any one of claims 1 to 5, wherein all operations are stopped via the stop processing means.